Tooth-brush.



D. L. CHANDLER. TOOTH BRUSH.`

APPLICATION PILBD MAY 12, 1910.

1,055,607, Patented Mar. 11, 1913.

OOOOOOOOO fig-fplan of the same.

DJIEL L. CHANDLER, F AYER, MASSACHUSETTS.

Toorn-BRUSH.

Specification of Letters Patent.

Patented Mar. 11,1913.

indication led May 12, 191th' Serial No. 560,808.

" neem.'

ill-QUEL L. CHANDLER, United States, residing at Ayer, in the eounty of Middlesex and State of l as iusetts., .leve invented new and usefun'ovenienls in Tooth-Brushes, of u'hiel Yollfnving a specification.

rela

to unl improved iat they cannot therefrom, and invention is to so body portion of e no possibility of ences get-ting in the different bunches of the bristles and the he brush. or between the which unites said only portion of the brush,

water or t around the b'. bristles und body portion bristles ristles to the object of h invention, therefore-` being to iiriniy unit-e the bristles to the body portion of the brush und to seal them in the body portion of the brush so as to render the saine water-tight., thus making the brush durable and hygienic in ils construction.

' attain these ends, each bunch of bristles.

which together form the bristle portion of the brush, is firmly fastened to and sealed iu a. bristle holder of tietile material. preferably consisting of a Coller` and the collar is then iirnily united to the body portion of the brush und, settled therein. so thaty no water or f 1... matter con get in around the base of the brist/s in the bristle holder, nud neither een any Water orl foreign sub- `stance get in between the. holder :1nd the body portion of the brush.

rlhe invention in the improved tooth brush formed by uniting a, plurality of seid bristle holders with their bunches of bristles to the bodyportion of the brush in the process of manufzwturing, all as hereinafter psrtieulurly set. forth in the specification :ind particularly pointed out in the claim.

Referring to the drawings: Figure 1 is a plan view ol the be. v portion of a tooth brush. and handle with the bristles removed. iiig. 2 il. s. longitudinal sertiou teken on line 2-2 ot' Fig. 1. Fig. 5l is a side elevation of bristle o older. Fig. fl is an underneath Fig. 5 is a side elevation of s. bristle holder with a bunch of bristles inserted therein and projecting therethrough. Fig. 6 is a side elevation of the bristle holder with the bristles drawn up into place and a cross-pin inserted therein. Fig. 7 is an enlarged sectional elevation showing two ot' the bristle holders in position with the bristles therein, one of said bristle holders being shown in setion.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is the body or back portion of the brush ,and 11 the handle thereof. The body portion of the brush is provided with holes 12, 12 which preferably extend part way through said body portion, these holesI being provided for the purpose of receiving the bristle holders 13, 13.

The bristle holders 13 are eaeh provided with a hole 11 extending therethrough and also with a transverse groove 15 extending' across the bottom thereof. lt. will be noted that the handle and beek of the tooth brush and also the holders are preferably formed of liotile material such as Celluloid, nud that. the holders are of slightly larger diameter when first manufactured than the. diameter of the holes 12, 12 into which they are to b e subsequently foreed.`

The, bunches o t' bristles 16 are attached to the bristle holders 13 in the following manner: A bunch of bristles is first doubled .longitudinally thereof and pushed through the hole 1l in the holder 13 and downwardly below the bottom of said holder, :is illustrated in Fig. 5. lt will be noted that the holes '14, 14 are drilled in the holders 13 of the right size to have the bunch of bristles when doubled fill the hole. After the bunch of bristles has been doubled and passed through the hole in the -eollur or holder, as illustrated in Fig. 5, a eross-pin 17, also preferably ot Celluloid, is passed through the bunch of bristles inside the folded end thereof and within the cross groove 15. The collar and that. portion of the bristles which extends down below said collar, together with the pin '17, are thenv dipped into liquid relluloida rollodion` or :my other suitable sealing material, and the bristles are'then drawnup into the collar tight', so as to leave the collar and the bristles in the form shown` in Fig. G. The collar is then compressed by\ e suitable compressing tool or pineers, while hot, so as to slightly reduce the outside dirmeter, and also so as to close the bristlesup firmly Within the CollarA` so that the bristles with the liquid Celluloid will till the hole and hernietieally seal the same against any liquid passing therethrough. Atter :the collars have had the bristles attached to them and sealed therein in the manner hereinbetore set tortln they are dipped in a mixture oit' alcohol and ether.y which mixture slightly softens the collarsy y nntil they become plastic under the action thereo'l".

saine, hereinliefore described, but by the cross-pin 1i which locks the bristles Wlthin i -tlieritllrounli. a seriesy ot bristle hold-ers ot' These Collars and theiil bristles in :i plastic state are then 'forced into the holes l2 in the brush and allowed to dry and set,

whereupon the bristles wilY b'eeoine hermetieally sealed in the collars and the collars will be tirinly attached to and hei-nietieally sealed in the brush back, the result being that no substance ot any kind can get in back of the bristles and between the bristles and their respeetire holders; neither can water or any foreign substance get in between the collars and the back of the brush.

it will be evident that the collars, after they have dried and set1 as hereinbetore set ft th.y will tirinly hold the bristles in the brush back or body portion` and the bris ttes also will. be tiriuly held to their respective collars, not only bythe sealing of the l l t l l l l l i tit-tilll material heruietieally sealed within .sziid holes. each ot said bristle holders bzwtggj a holt` @vending tlierethroughr` and a bunth ot' bristles doubled longitudinally thereof rr-:tendinj v through the hole in itsI re speetire holder and hermetieally- Sealed theiein and a pin ot t'itft'ile material extendi ing entirelyY across lsaid holder thrtfigh said.

buntfh o'l bristles and .unitingniv with said holder.

ln testimony whereof lhave hereunto setl my hand in presence ot' tito subscribing Witnesses.

DAN i llli li. (,IH AN Dliltllt.

Cannoty be removed i 

